| Limnenetes(noun, fauna, extinction, rupelian) |
| Liotomus(noun, extinction, paleocene, genus) |
| Lithornis(noun, fauna, extinction, bartonian) |
| Lithornithidae(noun, fauna, extinction, bartonian) |
| Megacerops(noun, fauna, extinction, priabonian) |
| Mene oblonga(expression, fauna, extinction, rupelian) |
| Mesatirhinus(noun, fauna, extinction, lutetian) |
| Mesodma(noun, extinction, paleocene, genus) |
| Mesohippus(noun, fauna, extinction, rupelian) |
| Mesonychid(noun, fauna, extinction, rupelian) |
| Mesonychidae(noun, fauna, extinction, rupelian) |
| Metanephrocerus(noun, fauna, extinction, priabonian) |
| Metatelmatherium(noun, fauna, extinction, priabonian) |
| Microcosmodon(noun, extinction, paleocene, genus) |
| Mimetodon(noun, extinction, paleocene, genus) |
| Mongolestes(noun, fauna, extinction, rupelian) |
| Neoliotomus(noun, extinction, paleocene, genus) |
| Neoplagiaulacidae(noun, fauna, extinction, rupelian) |
| Neoplagiaulax(noun, extinction, paleocene, genus) |
| Notostylopidae(noun, fauna, extinction, rupelian) |